[42.10] The Distribution of Star Formation with Environment at z ~1

T. Small (Caltech), GALEX Science Team

Early results from the GALEX mission have been used to
measure the star formation rate density at z ~1. Using
large samples of spectroscopic redshifts from the Team Keck
Redshift Survey and other surveys of faint galaxies, we have
refined the estimate of the star formation rate density at
z ~1. The new samples of redshifts have better
velocity resolution than the samples used in our previous
work, and we have taken advantage of this increased accuracy
to assign galaxies to the field, groups, and clusters,
therby allowing us explore the variation of star formation
at z ~1 with environment. Here, we will present these
results and compare them to similar analyses at lower
redshift. We will also briefly discuss the challenge of
matching objects from GALEX images, which have ~5 - 6
arcsecond resolution, with optical catalogs derived from
images with arcsecond or sub-arcsecond resolution.